Device for Automatically and Rapidly Packaging Concrete and Its Adjusting and Packaging Methods

Abstract

Device for automatically and quickly packaging concrete, and its adjustment and packaging method. The device includes a detachable clamping unit, a spring tightener and a handle. The detachable clamping unit includes a first clamping piece and a second clamping piece; the first and second clamping pieces enclose an annular clamping area; the inner arc surfaces of the first and second clamping pieces are provided with arc-shaped chutes along their arc directions; each arc-shaped chute is equipped with a retractable arc-shaped sliding piece; the spring tighteners are respectively arranged between the opposite fixed connection ears for adjusting the clamping size of the annular clamping area, and the handles are respectively arranged at the two ends of the first clamping piece and the second clamping piece; the adjustment and packaging method includes the following steps: roughly adjusting the clamping size of the annular clamping area according to the size of the concrete test block, finely adjusting the clamping size of the annular clamping area through the sliding piece control switch, adjusting the clamping force of the device through the spring tightener; and inspecting the packaging quality. The beneficial effects of the present invention are: fast packaging and convenient adjustment.

Description

Technical Field

[0001] The present invention relates to a device for automatically and quickly packaging concrete, as well as an adjustment and packaging method, belonging to the field of packaging. Background Art

[0002] In scientific research experiments in the field of civil engineering, the control variable method is generally adopted, that is, other conditions except the variable are controlled as much as possible to remain unified to exclude the interference of other factors, so as to obtain the influence of a single variable on the result and obtain scientific research results. For example, in current civil engineering scientific research experiments, it is often necessary to package the non-exposed surface of concrete test blocks, so as to retain an exposed surface for relevant research. Take the concrete carbonation experiment as an example. In the experiment, it is necessary to package the non-carbonated surface of the test block and retain an exposed surface for carbonation experiment. The existing packaging method is usually to wrap it manually with aluminum foil tape one by one. This manual packaging method has many disadvantages. In addition to consuming time and energy and having low efficiency, the packaging quality and sealing degree of each test block will also vary greatly due to the influence of subjective factors. The more experimental test blocks there are, the greater this influence will be, resulting in greater deviation in scientific research data. Seriously, it may even lead to the failure of the entire scientific research experiment.

[0003] Currently, there is no auxiliary tool similar to that applied in civil engineering experiments, which can greatly save time and energy, facilitate the control of experimental variables, and reduce the influence on the experiment; there is a device for adjusting the specification size of the device, which is applicable to cylindrical concrete test blocks of most specification types; there are switches and markings provided in multiple places, which is convenient for operators to control the device; and it adopts a symmetrical design, which is durable and beautiful. Summary of the Invention

[0004] Aiming at the above various problems, the object of the present invention is to provide a device for quickly packaging concrete test blocks and its operation method in civil engineering scientific research experiments, which is efficient and labor-saving, and is beneficial to the accuracy of subsequent experiments, as well as an adjustment and packaging method.

[0005] The device for automatically and quickly packaging concrete according to the present invention includes a detachable clamping unit for clamping the test block, a spring tightener for adjusting the clamping degree of the clamping unit, and a handle for grasping.

[0006] The detachable clamping unit includes a first clamping piece and a second clamping piece symmetrically arranged, the first clamping piece and the second clamping piece both having the same semicircular ring structure, and the fixed connecting ears at both ends of the first clamping piece and the second clamping piece are connected as a whole through two sets of the handles, and the semicircular rings of the first clamping piece and the second clamping piece form an annular clamping area; the inner arc surfaces of the first clamping piece and the second clamping piece are provided with an arcuate slide groove along their arc directions; each of the arcuate slide grooves is equipped with an arcuate sliding piece that radially extends and contracts along the annular clamping area, the outer arcuate edge of the arcuate sliding piece is inserted into the arcuate slide groove, and is connected to the arcuate slide groove through a sliding piece control switch to control the fixing and release of the arcuate sliding piece;

[0007] There are two sets of spring tighteners for adjusting the clamping size of the annular clamping area, and they are respectively arranged between the fixed connection ears directly opposite the first clamping piece and the second clamping piece, and include a spring gear controller and a spring group composed of multiple parallel springs. The spring gear controller has a gear adjustment portion for connecting to the spring group and adjusting the tension of the spring group, and a gear adjustment button for controlling different gears of the gear adjustment portion. The gear adjustment button is embedded in the fixed connection ear of the first clamping piece and connected to the first end of the spring group. The second end of the spring group is connected to the fixed connection ear of the second clamping piece.

[0008] There are two sets of handles, which are respectively arranged at the opposite ends of the detachable clamping unit, including a handle body, a connecting block fixedly connected to the handle body, and a clamping piece control switch arranged on the connecting block. The connecting block is provided with a first slide groove and a second slide groove side by side, and the first slide groove and the second slide groove are both equipped with a connecting bayonet that can be extended and locked along the axial direction of the slide groove; the first slide groove and the second slide groove are respectively connected to the first slide groove and the second slide groove through the connecting bayonet; the clamping piece control switch is arranged on the connecting block, and its control end is connected to the control end of the connecting bayonet for controlling the opening and closing of the connecting bayonet.

[0009] Furthermore, it also includes a standard ruler for measuring the size of concrete. The standard ruler is arranged below the spring tightener, and a concrete standard size scale is provided along the length direction of the standard ruler, which is convenient for adjusting the size of the annular clamping area of the device to quickly adapt to the packaging of concrete of different specifications; the fixed connecting ears of the first clamping piece and the second clamping piece are symmetrically provided with ruler grooves for inserting the standard ruler, and fixed bayonet is equipped in the ruler groove, and the standard ruler is clamped by the contact between the fixed bayonet and the ruler surface of the standard ruler.

[0010] Furthermore, the connecting bayonet is a high-strength bayonet, which can realize the asymmetric placement of the first clamping piece and the second clamping piece, thus greatly improving the adaptability of the device. Moreover, the connecting bayonet can automatically expand and contract according to the required length and lock at any position, enhancing the adaptability of the device. The high-strength bayonet is controlled by a clamping piece control switch.

[0011] Furthermore, the handle body is symmetrically arranged at the center of the connecting block through a clamping movable bolt, and a striped rubber sleeve is coated on the outside of the handle body.

[0012] Furthermore, the cross-section of the arc-shaped sliding piece is trapezoidal, which is convenient for the test block to be put in, taken out and packaged.

[0013] Furthermore, the first sliding groove and the second sliding groove are coaxial and perpendicular to the central axis of the clamping part, which are used to adjust the positions of the first clamping piece and the second clamping piece, and further adjust the size of the clamping area of the device to adapt to the specification size of the test block.

[0014] Furthermore, the spring gear controller is a manual push-button switch and has three gears of 0, 1, and 2. Different gears of the spring gear controller are correspondingly connected to different numbers of springs in the spring group, so as to facilitate the adjustment of the clamping force applied during the packaging of the device, and further avoid the lack of airtightness during the packaging of concrete test blocks due to too small clamping force, adapting to different specifications of concrete packaging.

[0015] Furthermore, a compression spring is arranged inside the arc-shaped sliding piece, and the compression springs are arranged radially along the arc-shaped sliding piece. One end of the compression spring is connected to the inside of the arc-shaped sliding piece, and the other end is connected to the bottom of the arc-shaped sliding groove, so that the arc-shaped sliding piece can expand and contract radially along the annular clamping area; the sliding piece control switch is embedded on the corresponding clamping piece and has a locking part for connecting with the arc-shaped sliding piece and a pressing part for controlling the opening and closing of the locking part. The control part can be locked to the arc-shaped sliding piece, and the opening or closing of the control part is adjusted by adjusting the state of the pressing part, controlling the compression and release of the compression spring, and further adjusting the fixed position of the arc-shaped sliding piece in the arc-shaped sliding groove.

[0016] As for the adjustment method of the device for manually and quickly packaging concrete test blocks as described in the present invention, it is characterized by including the following steps:

[0017] 1) According to the size of the concrete test block, adjust the position of the specification scale engraved with the concrete specification size on the scale groove, and control the positions of the first clamping piece and the second clamping piece in the first sliding groove and the second sliding groove by adjusting the clamping piece control switch, roughly adjust the clamping size of the annular clamping area formed by the first clamping piece and the second clamping piece, and adjust the clamping force of the device;

[0018] 2) Control the switch through the sliding piece, control the fixed position of the arc-shaped sliding piece in the arc-shaped chute, finely adjust the clamping size of the annular clamping area and the clamping force of the device, so that the device fits the packaging of the concrete test block;

[0019] 3) Flip the concrete test block to the state where the bottom surface of its non-exposed surface faces upward, and then place the center of the aluminum foil paper on the bottom surface of the non-exposed surface of the test block, so that the bottom surface of the non-exposed surface of the test block is completely covered with the aluminum foil film;

[0020] 4) Push down from the bottom surface of the non-exposed surface of the test block that has been wrapped with the aluminum foil film by the device. After pushing until one side of the device is in close contact with the operating table surface, then take out the test block from the device, so that the aluminum foil film completely fits the side surface of the concrete test block, and perform preliminary packaging on the test block;

[0021] 5) Inspect the packaging quality to determine whether the aluminum foil film fits the surface of the test block. If the quality of the packaged test block does not meet the requirements, adjust the clamping size and clamping force of the annular clamping area of the device so that the packaged concrete test block meets the quality requirements.

[0022] Just adjust the size of the gauge according to the size of the concrete test block, lock the bayonet, and then the clamping size and clamping area of the device can be roughly adjusted. Press the control switch of the clamping piece to turn on the switch, and the first and second clamping pieces will be fixed in the first and second chutes, thus achieving precise control of the clamping size and clamping area of the device. Press the control switch of the sliding piece to turn the switch to the off state, and the arc-shaped sliding piece will be in a loose and adjustable state. According to the concrete specifications and the clamping area and size of the device, adjust the position of the arc-shaped sliding piece in the arc-shaped chute, and then press the switch to turn it on to lock the position of the sliding piece, so as to adjust the clamping area of the device again to make the clamping area more suitable for the test block specifications.

[0023] If the specifications of the packaged concrete test blocks are all of the same type, after one concrete test block is packaged, directly proceed with the packaging. If the specifications of the packaged concrete test blocks are of different types, it is necessary to readjust the clamping area of the device and then proceed with the packaging.

[0024] A packaging method using the device for manually and quickly packaging concrete test blocks according to the present invention is characterized by including the following steps:

[0025] ① Prepare several pieces of aluminum foil film, strong glue, scissors and other equipment in advance and check that all functions of the device are in normal state;

[0026] ② First select a batch of test blocks of one type, take them out of the curing room and place them on the operating table, and then adjust the device according to the described adjustment method so that it fits the test blocks of this type;

[0027] ③ After the device adjustment is completed, take out a test block, turn the test block over so that the bottom surface of its non-exposed surface faces upward, and then place the center of the aluminum foil paper on the bottom surface of the non-exposed surface of the test block, so that the bottom surface of the non-exposed surface of the test block is completely covered with the aluminum foil film;

[0028] ④ Use the device to push down from the bottom surface of the non-exposed surface of the test block that has been wrapped with the aluminum foil film. After pushing until one side of the device is in close contact with the tabletop of the operating table, then take out the test block from the device, so that the aluminum foil film completely fits the side surface of the concrete test block, and complete the initial packaging of one test block;

[0029] ⑤ Inspect the quality of the initial packaging and check whether the aluminum foil film fits the surface of the test block. If the quality of the concrete specimen does not meet the requirements, readjust the spring gear controller and / or the clamping piece control switch to obtain the initial packaged concrete test block that meets the requirements;

[0030] ⑥ After the rough packaging of the first test block meets the requirements, repeat operations ③ and ④ to quickly package the remaining test blocks of this type;

[0031] ⑦ After all the test blocks of this type are packaged, use scissors and strong glue to perform fine packaging on the test blocks; the scissors are used to cut the extra part of the aluminum foil film, and the strong glue is used to paste the unreliable parts of the aluminum foil film and the test block to complete the fine packaging of the test blocks of this type;

[0032] ⑧ For other types of test blocks, it is necessary to readjust the clamping size and clamping force of the annular clamping area of the device, and then repeat operations ①-⑦ to package the test blocks.

[0033] The beneficial effects of the present invention: The device has a simple and convenient structure, simple operation, can quickly and accurately adjust the size and clamping force of the clamping area of the device, quickly and efficiently package concrete test blocks, not only can ensure the sealing quality, greatly speed up the packaging of concrete test blocks, improve the packaging efficiency, control relevant variables and reduce interference with scientific research results, but also can adapt to the packaging of many different specifications of concrete test blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 is the front view of the present invention;

[0035] Figure 2 is the side view of the present invention;

[0036] Figure 3 is Figure 1 the A-A sectional view of

[0037] Figure 4 is Figure 2 the B-B sectional view of DETAILED DESCRIPTION OF THE INVENTION

[0038] The present invention will be further described below in conjunction with the accompanying drawings

[0039] Refer to the attached figure:

[0040] Example 1 The device for automatic and rapid packaging of concrete according to the present invention comprises a detachable clamping unit 1 for clamping a test block, a spring tightener 2 for adjusting the clamping degree of the clamping unit, and a handle 3 for grasping;

[0041] The detachable clamping unit 1 includes a first clamping piece 11 and a second clamping piece 12 symmetrically arranged, and the first clamping piece 11 and the second clamping piece 12 are both semicircular ring structures with the same structure, and the fixed connecting ears at both ends of the first clamping piece 11 and the second clamping piece 12 are connected as a whole through two sets of handles, and the semicircular rings of the first clamping piece 11 and the second clamping piece 12 form an annular clamping area; the inner arc surfaces of the first clamping piece 11 and the second clamping piece 12 are provided with arc-shaped slide grooves along their arc directions; each of the arc-shaped slide grooves is equipped with an arc-shaped sliding piece 13, the outer arc-shaped edge of the arc-shaped sliding piece 13 is inserted into the arc-shaped slide groove, and is fixed and released with the arc-shaped slide groove by a sliding piece control switch 14;

[0042] The spring tightener 2 comprises two sets, one set being disposed between the fixed connection ears facing the first clamping piece 11 and the other being disposed between the second clamping piece 12, and comprising a spring gear position controller 21 and a spring group 22 consisting of a plurality of parallel springs. The spring gear position controller 21 comprises a gear shifting portion for connecting the spring group and adjusting the tension of the spring group, and a gear shifting button for controlling different gear positions of the gear shifting portion. The gear shifting button is embedded in the fixed connection ear of the first clamping piece 11 and connected to the first end of the spring group 22. The second end of the spring group 22 is connected to the fixed connection ear of the second clamping piece 12.

[0043] There are two sets of handles 3, which are respectively arranged at the opposite ends of the detachable clamping unit 1, including a handle body 31, a connecting block 32 fixedly connected to the handle body 31, and a clamping piece control switch 34 arranged on the connecting block 32. The connecting block 32 is provided with a first slide groove 311 and a second slide groove 312 side by side, and the first slide groove 311 and the second slide groove 312 are each equipped with a connecting bayonet 33 that is retractable and locked along the axial direction of the slide groove; the first slide groove 311 and the second slide groove 312 are respectively connected to the first slide groove 311 and the second slide groove 312 through the connecting bayonet; the clamping piece control switch 34 is arranged on the connecting block 32, and its control end is connected to the control end of the connecting bayonet 33 for controlling the opening and closing of the connecting bayonet 33.

[0044] Furthermore, it also includes a standard ruler 4 for measuring the size of concrete, and the standard ruler 4 is provided with a concrete standard size scale; the fixed connection ears of the first clamping piece 11 and the second clamping piece 12 are symmetrically provided with ruler grooves 15 for inserting the standard ruler 4.

[0045] Further, there are three gears, namely 0, 1, and 2, provided on the spring gear controller 21.

[0046] Further, the connecting bayonet 33 is a high-strength bayonet.

[0047] Further, the handle body 31 is symmetrically arranged at the center of the connecting block 32 through a clamping movable bolt, and a striped rubber sleeve is covered outside the handle body 31.

[0048] Further, the cross-section of the arc-shaped sliding piece is trapezoidal, which is convenient for the test block to be put in, taken out and packaged.

[0049] Further, a compression spring 131 is arranged inside the arc-shaped sliding piece 13. The compression springs are arranged along the radial direction of the arc-shaped sliding piece. One end of the compression spring 131 is connected to the inside of the arc-shaped sliding piece 13, and the other end is connected to the bottom of the arc-shaped chute, so that the arc-shaped sliding piece can radially expand and contract along the annular clamping area; the sliding piece control switch is embedded on the corresponding clamping piece, and has a locking part for connecting with the arc-shaped sliding piece and a pressing part for controlling the opening and closing of the locking part. The control part is lockably connected to the arc-shaped sliding piece, and by adjusting the state of the pressing part, the control part is opened or closed, controlling the compression and release of the compression spring, and further adjusting the fixed position of the arc-shaped sliding piece in the arc-shaped chute.

[0050] Embodiment 2 The adjustment method of the device for manually and quickly packaging concrete test blocks as described in Embodiment 1 of the present invention includes the following steps:

[0051] 1) According to the size of the concrete test block, adjust the position of the gauge 4 engraved with the concrete specification dimensions on the gauge slot 15, and control the positions of the first clamping piece 11 and the second clamping piece 12 in the first chute 311 and the second chute 312 by adjusting the clamping piece control switch 34, roughly adjust the clamping size of the annular clamping area formed by the first clamping piece 11 and the second clamping piece 12, and adjust the clamping force of the device;

[0052] 2) Control the fixed position of the arc-shaped sliding piece 13 in the arc-shaped chute through the sliding piece control switch 14, finely adjust the clamping size of the annular clamping area and the clamping force of the device, so that the device fits the packaging of the concrete test block;

[0053] 3) Turn the concrete test block to the state where the bottom surface of its non-exposed surface faces upward, and then place the center of the aluminum foil paper on the bottom surface of the non-exposed surface of the test block, so that the bottom surface of the non-exposed surface of the test block is completely covered with the aluminum foil film;

[0054] 4) Use the device to push down from the bottom surface of the non-exposed surface of the test block wrapped with aluminum foil film until one side of the device is in close contact with the tabletop of the operating platform, and then take out the test block from the device to make the aluminum foil film fully fit the side surface of the concrete test block for primary packaging of the test block;

[0055] 5) Inspect the packaging quality to determine whether the aluminum foil film fits the surface of the test block. If the quality of the packaged concrete test block does not meet the requirements, adjust the clamping size and clamping force of the annular clamping area of the device so that the packaged concrete test block meets the quality requirements; if the size of the concrete to be packaged is too large, the spring clamp can be adjusted to gear 1 or 2 to increase the clamping force to a certain extent to ensure the packaging quality.

[0056] Example 3 The packaging method using the device for manually and quickly packaging concrete test blocks described in Example 1 includes the following steps:

[0057] ① Prepare several pieces of aluminum foil film, strong glue, scissors and other equipment in advance and check that all functions of the device are in normal state;

[0058] ② First select a batch of test blocks of one type, take them out from the curing room and place them on the operating platform, and then adjust the device according to the described adjustment method to make it fit the test blocks of this type;

[0059] ③ After the device is adjusted, take out a test block, turn the test block over so that the bottom surface of its non-exposed surface faces up, and then place the center of the aluminum foil paper on the bottom surface of the non-exposed surface of the test block to completely cover the bottom surface of the non-exposed surface of the test block with the aluminum foil film;

[0060] ④ Use the device to push down from the bottom surface of the non-exposed surface of the test block wrapped with aluminum foil film until one side of the device is in close contact with the tabletop of the operating platform, and then take out the test block from the device to make the aluminum foil film fully fit the side surface of the concrete test block to complete the primary packaging of one test block;

[0061] ⑤ Inspect the quality of the primary packaging to check whether the aluminum foil film fits the surface of the test block. If the quality is low, control the spring gear controller (in the initial state, the spring gear controller is in gear 0), raise the spring clamp to gear 1 to increase the clamping force of the device, and on the test block that has completed the first primary packaging, directly use the device to push down from the bottom surface of the non-exposed surface of the test block until the secondary packaging is completed again, and inspect the quality of the primary packaging again; if the quality still does not meet the requirements, continue to shift up to gear 2, and on the test block that has completed the secondary packaging, directly use the device to push down from the bottom surface of the non-exposed surface of the test block until the tertiary packaging is completed again, and inspect the packaging quality here; if the quality is still not okay, the device needs to be adjusted again so that the annular adjustment area and clamping force are suitable for this type of test block, and then the test block is repackaged and inspected and adjusted;

[0062] ⑥After the rough packaging of the first test block meets the requirements, repeat operations ③ and ④ to quickly package the remaining test blocks of this type;

[0063] ⑦After all the test blocks of this type are packaged, use scissors and strong glue to perform fine packaging on the test blocks; the scissors are used to cut the extra aluminum foil film, and the strong glue is used to paste the aluminum foil film at the insecure parts of the test block (the contact area between the arc edge of the exposed surface and the aluminum foil film) to prevent the aluminum foil paper from slipping and being damaged during transportation, and complete the fine packaging of the test blocks of this type;

[0064] ⑧For test blocks of other types, the clamping area of the device needs to be readjusted; if the spring clamp is not in the 0th gear, the spring clamp needs to be adjusted to the 0th gear first, and then control the control switch of the clamping piece to make the clamping piece return to the loose and adjustable state, and then readjust the annular clamping area of the device according to the specification size of the concrete test block according to the above adjustment method; then repeat operations ①-⑦ to package the test blocks.

[0065] The content described in the embodiments of this specification is only a list of the implementation forms of the inventive concept. The protection scope of the present invention should not be regarded as limited to the specific forms stated in the embodiments. The protection scope of the present invention also includes equivalent technical means that can be conceived by those skilled in the art according to the inventive concept of the present invention.

Claims

1. A method for adjusting a device for automatically and quickly packaging concrete test blocks, characterized in that: The device for automatically and quickly packaging concrete test blocks comprises a detachable clamping unit (1) for clamping the test block, a spring tightener (2) for adjusting the clamping degree of the clamping unit, and a handle (3) for grasping; The detachable clamping unit (1) comprises a first clamping piece (11) and a second clamping piece (12) which are symmetrically arranged, the first clamping piece (11) and the second clamping piece (12) are both semi-circular structures with the same structure, and the fixed connecting ears at both ends of the first clamping piece (11) and the second clamping piece (12) are connected as a whole through two sets of the handles, and the semi-circular rings of the first clamping piece (11) and the second clamping piece (12) form an annular clamping area; the inner arc surface of the first clamping piece (11) and the second clamping piece (12) are provided with an arc-shaped sliding groove along the arc direction; each of the arc-shaped sliding grooves is equipped with an arc-shaped sliding piece (13), the outer arc edge of the arc-shaped sliding piece (13) is inserted into the arc-shaped sliding groove, and is connected to the arc-shaped sliding groove through a sliding piece control switch (14) to control the fixing and loosening of the arc-shaped sliding piece (13); The spring tightener (2) comprises two sets, which are respectively arranged between the fixed connection ears of the first clamping piece (11) and the second clamping piece (12), and include a spring gear position controller (21) and a spring group (22) composed of a plurality of parallel springs. The spring gear position controller (21) has a gear adjustment portion for connecting the spring group and adjusting the tension of the spring group and a gear adjustment button for controlling different gears of the gear adjustment portion. The gear adjustment button is embedded in the fixed connection ear of the first clamping piece (11) and is connected to the first end of the spring group (22). The second end of the spring group (22) is connected to the fixed connection ear of the second clamping piece (12). The handle (3) comprises two sets, which are respectively arranged at two opposite ends of the detachable clamping unit (1), and include a handle body (31), a connecting block (32) fixedly connected to the handle body (31), and a clamping piece control switch (34) arranged on the connecting block (32); a first slide groove (311) and a second slide groove (312) are arranged side by side on the connecting block (32); a connecting bayonet (33) which is telescopic and locked along the axial direction of the slide groove is equipped in each of the first slide groove (311) and the second slide groove (312); the first clamping piece (11) and the second clamping piece (12) are respectively connected to the first slide groove (311) and the second slide groove (312) through the connecting bayonet; the clamping piece control switch (34) is arranged on the connecting block (32), and its control end is connected to the control end of the connecting bayonet (33) for controlling the opening and closing of the connecting bayonet (33); The adjustment method includes the following steps: 1) According to the size of the concrete test block, adjust the position of the gauge with the concrete specification dimensions engraved on it on the gauge slot. Control the positions of the first clamping piece and the second clamping piece in the first sliding slot and the second sliding slot through the clamping piece control switch, roughly adjust the clamping size of the annular clamping area formed by the first clamping piece and the second clamping piece, and adjust the clamping force of the device. 2) Control the fixed position of the arc-shaped sliding piece in the arc-shaped sliding slot through the sliding piece control switch, finely adjust the clamping size of the annular clamping area and the clamping force of the device, so that the device fits the packaging of the concrete test block. 3) Flip the concrete test block to a state where the bottom surface of its non-exposed surface faces upward, and then place the center of the aluminum foil paper on the bottom surface of the non-exposed surface of the test block, so that the bottom surface of the non-exposed surface of the test block is completely covered with the aluminum foil film. 4) Use the device to push down from the bottom surface of the non-exposed surface of the test block already wrapped with the aluminum foil film. After pushing until one side of the device is in close contact with the operating table surface, then take out the test block from the device, so that the aluminum foil film completely fits the side surface of the concrete test block, and conduct preliminary packaging on the test block. 5) Inspect the packaging quality to determine whether the aluminum foil film fits the surface of the test block. If the quality of the packaged test block does not meet the requirements, then adjust the clamping size and clamping force of the annular clamping area of the device so that the packaged concrete test block meets the quality requirements.

2. The adjustment method according to claim 1, characterized in that: It also includes a gauge (4) for measuring the size of the concrete. The gauge (4) is provided with scales of concrete specification dimensions; symmetrically provided on the fixed connection ears of the first clamping piece (11) and the second clamping piece (12) are gauge slots (15) for inserting the gauge (4).

3. The adjustment method according to claim 1, characterized in that: The handle body (31) is symmetrically arranged at the center of the connection block (32) through a clamping movable bolt, and a striped rubber sleeve is covered on the outside of the handle body (31).

4. The adjustment method according to claim 1, wherein: The cross-section of the arc-shaped sliding piece (13) is trapezoidal.

5. The adjustment method according to claim 1, wherein It includes the following steps: ① Prepare several pieces of aluminum foil film, strong glue, scissors and other equipment in advance and check that all functions of the device are in normal state. ② First select a batch of test blocks of one type, take them out of the curing room and place them on the operating table, and then adjust the device according to the adjustment method described in claim 1 so that it fits the test blocks of this type. ③ After the device is adjusted, take out a test block, flip the test block to a state where the bottom surface of its non-exposed surface faces upward, and then place the center of the aluminum foil paper on the bottom surface of the non-exposed surface of the test block, so that the bottom surface of the non-exposed surface of the test block is completely covered with the aluminum foil film. ④ Use the device to push down from the bottom surface of the non-exposed surface of the test block already wrapped with the aluminum foil film. After pushing until one side of the device is in close contact with the operating table surface, then take out the test block from the device, so that the aluminum foil film completely fits the side surface of the concrete test block, and complete the preliminary packaging of one test block. ⑤ Inspect the quality of the preliminary packaging to check whether the aluminum foil film fits the surface of the test block. If the quality of the concrete sample does not meet the requirements, then readjust the spring gear controller and / or the clamping piece control switch to obtain a preliminary packaged concrete test block that meets the requirements. ⑥ After the rough packaging of the first test block meets the requirements, repeat operations ③ and ④ to quickly package the remaining test blocks of this type. [[ID= Scissors are used to cut the redundant part of the aluminum foil film, and strong glue is used to paste the unreliable parts between the aluminum foil film and the test block to complete the fine packaging of this type of test block; ⑧ For other types of test blocks, it is necessary to readjust the clamping size and clamping force of the annular clamping area of the device, and then repeat the operations of ①-⑦ to package the test blocks.

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